329 research outputs found
Securely Outsourcing Large Scale Eigen Value Problem to Public Cloud
Cloud computing enables clients with limited computational power to
economically outsource their large scale computations to a public cloud with
huge computational power. Cloud has the massive storage, computational power
and software which can be used by clients for reducing their computational
overhead and storage limitation. But in case of outsourcing, privacy of
client's confidential data must be maintained. We have designed a protocol for
outsourcing large scale Eigen value problem to a malicious cloud which provides
input/output data security, result verifiability and client's efficiency. As
the direct computation method to find all eigenvectors is computationally
expensive for large dimensionality, we have used power iterative method for
finding the largest Eigen value and the corresponding Eigen vector of a matrix.
For protecting the privacy, some transformations are applied to the input
matrix to get encrypted matrix which is sent to the cloud and then decrypting
the result that is returned from the cloud for getting the correct solution of
Eigen value problem. We have also proposed result verification mechanism for
detecting robust cheating and provided theoretical analysis and experimental
result that describes high-efficiency, correctness, security and robust
cheating resistance of the proposed protocol
Morphology and histology of the defensive glands of stick insect, Abrosoma johorensis
This study was conducted to identify the morphology and histology of defensive glands of stick insect, Abrosoma johorensis (Phasmida: Aschiphasmatidae). Samples were collected from Mount of Ledang, Johor. Observation of gross morphology in-situ and ex-situ on the defensive gland of A. johorensis have been done using stereo microscope Carl Zeiss V12) connected to Canon EOS 1000D with LAS EZ software. Cell of A. johorensis’s defensive gland were stained using a special staining procedure that is Periodic Acid Schiff’s reagent and Alcian Blue method. Histological slides were viewed using light photomicroscope Carl Zeiss Axio Scope A1 with iSolutionLite v1.0 software. The defensive gland morphology showed that male individual of A. johorensis have a smaller size of gland compared to female individual. Histological study showed that the defensive gland structures consist of secretory epithelium and surrounded by layer of muscles known as longitudinal muscles and circular muscles. Observation on ultrastructure of the defensive gland was able to discover several components and organelle lies within the secretory epithelium region that might take part in the production of chemical secretion such as epithelial cells, pigment granules, ductules, vesicles, mitochondria, tracheols and secretory apparatus
Assessment Of Pond Water Quality Of Thakurgaon Sadar Upazila For Fish Production
During dry season, physico-chemical properties of waters from 30 ponds of Thakugaon Sadar Upazila, Thakurgaon, Bangladesh were analyzed for its quality and suitability for aquaculture. The variation in the physico-chemical parameters of the aquaculture ponds above or below standard values has potential effects on the health and productivity of aquaculture. Overall, we found that the pond water were acidic to neutral in nature (pH varied from 6.0 to 7.2) and could be suitable for aquaculture. The dissolved oxygen (DO) concentration was suitable for fish production but more DO level should be present for all aquatic life especially for fish production. Chemical oxygen demands (COD) of all pond waters were within the permissible limits for fish production. The temperature values were remained within the standard values in all the aquaculture ponds. Pond water samples contained Ca2+, Mg2+ and Na+ as the dominant cations and HCO3- and Cl- were the dominant anions. All samples were within soft class regarding hardness. Based on Zn2+, Mn2+, Fe3+, SO42-, NO3- and Cl- all pond water samples were within the safe limit for fish production during dry period. Int. J. Agril. Res. Innov. & Tech. 3 (1): 29-34, June, 2013 DOI: http://dx.doi.org/10.3329/ijarit.v3i1.1605
Altered sensory neuron development in CMT2D mice is site-specific and linked to increased GlyRS levels
Dominant, missense mutations in the widely and constitutively expressed GARS1 gene cause a peripheral neuropathy that usually begins in adolescence and principally impacts the upper limbs. Caused by a toxic gain-of-function in the encoded glycyl-tRNA synthetase (GlyRS) enzyme, the neuropathology appears to be independent of the canonical role of GlyRS in aminoacylation. Patients display progressive, life-long weakness and wasting of muscles in hands followed by feet, with frequently associated deficits in sensation. When dysfunction is observed in motor and sensory nerves, there is a diagnosis of Charcot-Marie-Tooth disease type 2D (CMT2D), or distal hereditary motor neuropathy type V if the symptoms are purely motor. The cause of this varied sensory involvement remains unresolved, as are the pathomechanisms underlying the selective neurodegeneration characteristic of the disease. We have previously identified in CMT2D mice that neuropathy-causing Gars mutations perturb sensory neuron fate and permit mutant GlyRS to aberrantly interact with neurotrophin receptors (Trks). Here, we extend this work by interrogating further the anatomy and function of the CMT2D sensory nervous system in mutant Gars mice, obtaining several key results: 1) sensory pathology is restricted to neurons innervating the hindlimbs; 2) perturbation of sensory development is not common to all mouse models of neuromuscular disease; 3) in vitro axonal transport of signalling endosomes is not impaired in afferent neurons of all CMT2D mouse models; and 4) Gars expression is selectively elevated in a subset of sensory neurons and linked to sensory developmental defects. These findings highlight the importance of comparative neurological assessment in mouse models of disease and shed light on key proposed neuropathogenic mechanisms in GARS1-linked neuropathy
Predicting Expressibility of Parameterized Quantum Circuits using Graph Neural Network
Parameterized Quantum Circuits (PQCs) are essential to quantum machine
learning and optimization algorithms. The expressibility of PQCs, which
measures their ability to represent a wide range of quantum states, is a
critical factor influencing their efficacy in solving quantum problems.
However, the existing technique for computing expressibility relies on
statistically estimating it through classical simulations, which requires many
samples. In this work, we propose a novel method based on Graph Neural Networks
(GNNs) for predicting the expressibility of PQCs. By leveraging the graph-based
representation of PQCs, our GNN-based model captures intricate relationships
between circuit parameters and their resulting expressibility. We train the GNN
model on a comprehensive dataset of PQCs annotated with their expressibility
values. Experimental evaluation on a four thousand random PQC dataset and IBM
Qiskit's hardware efficient ansatz sets demonstrates the superior performance
of our approach, achieving a root mean square error (RMSE) of 0.03 and 0.06,
respectively
Effects of Albizia saman (Jacq. Mull) leaf mulch on vegetative growth of maize (Zea mays L.) and soil chemical properties through biomass transfer
The study presents the effects of Albizia saman (Jacq. Mull) leaves in a biomass transfer as a source of organic fertilizer on the soil chemical properties and vegetative growth of maize (Zea mays) compared with NPK (15-15-15) in greenhouse condition. Albizia saman leaves and NPK (15-15-15) were applied at the rate of 2.5, 5.0 and 7.5 t/ha or 60, 90 and 120 kg/ha respectively, separately or in combination. The findings revealed that application of 2.5 t/ha A. saman leaves produced the maximum values for mean leaf number, leaf area and stem height (7.77, 212.24 cm2 and 49.67 cm, respectively) among the leaf much treatments but were not significantly different from those obtained by applying 90 kg/ha NPK fertilizer (7.86, 225.55 cm2 and 48.78 cm, respectively). However, the maximum number of leaf (8.4), leaf area (240.5 cm2), plant height (54.64 cm) and biomass (16.17 g) were obtained from the combination of 2.5 t/ha leaves with 90 kg/ha NPK. There was significant improvement in the soil chemical status with the application of 2.5 or 5.0 t/ha A. saman leaves whereas the application of 5.0 t/ha A. saman leaves experienced the highest value for organic carbon (3.56%), total nitrogen (0.23%) and potassium (0.16 mg/kg) and 2.5 t/ha leaves gave the highest value for available phosphorus (22.30 mg/kg). It can, therefore, be inferred that the application of 2.5 t/ha A. saman leaves as source of organic fertilizer will give a better growth of maize and the combination of this quantity with 90 kg/ha of NPK would give better results in crop yield and maintenance of soil fertility
Accretion Flow Dynamics During 1999 Outburst of XTE J1859+226 - Modeling of Broadband Spectra and Constraining the Source Mass
We examine the dynamical behavior of accretion flow around XTE J1859+226
during the 1999 outburst by analyzing the entire outburst data ( 166
days) from RXTE Satellite. Towards this, we study the hysteresis behavior in
the hardness intensity diagram (HID) based on the broadband ( keV)
spectral modeling, spectral signature of jet ejection and the evolution of
Quasi-periodic Oscillation (QPO) frequencies using the two-component advective
flow model around a black hole. We compute the flow parameters, namely
Keplerian accretion rate (), sub-Keplerian accretion rate (), shock location () and black hole mass () from the spectral
modeling and study their evolution along the q-diagram. Subsequently, the
kinetic jet power is computed as erg~s during one of the observed radio flares which indicates
that jet power corresponds to mass outflow rate from the disc. This
estimate of mass outflow rate is in close agreement with the change in total
accretion rate () required for spectral modeling before and during
the flare. Finally, we provide a mass estimate of the source XTE J1859+226
based on the spectral modeling that lies in the range of
with 90\% confidence.Comment: 12 pages, 8 figures, 3 tables, Accepted for publication in
Astrophysics and Space Scienc
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